♡♡ 사랑나무 ♡♡

To implement a drop-down button

Once your CToolBarCtrl object has been created, set the TBSTYLE_EX_DRAWDDARROWS style, using the following code:

m_wndToolBar.GetToolBarCtrl().SetExtendedStyle(TBSTYLE_EX_DRAWDDARROWS);

Set the TBSTYLE_DROPDOWN style for any new (InsertButton or AddButtons) or existing (SetButtonInfo) buttons that will be drop-down buttons. The following example demonstrates modifying an existing button in a CToolBarCtrl object:

TBBUTTONINFO tbi;

tbi.dwMask= TBIF_STYLE;

tbi.cbSize= sizeof(TBBUTTONINFO);

m_wndToolBar.GetToolBarCtrl().GetButtonInfo(ID_EDIT_CUT, &tbi);

tbi.fsStyle |= TBSTYLE_DROPDOWN;

m_wndToolBar.GetToolBarCtrl().SetButtonInfo(ID_EDIT_CUT, &tbi);

Add a WM_NOTIFY handler to the parent class of the toolbar object.

In the new handler, check for the TBN_DROPDOWN notification, using the following code:

#define lpnm   ((LPNMHDR)lParam)

#define lpnmTB ((LPNMTOOLBAR)lParam)

   switch(lpnm->code)

   {

      case TBN_DROPDOWN:

         //drop down button was hit

         //handle appropriately

         . . .

         return FALSE; //indicates the TBN_DROPDOWN

                       //notification was handled.

   }

If the TBN_DROPDOWN notification has been sent, display the appropriate popup menu. The following code demonstrates one method:

 
CMenu menu;

VERIFY(menu.LoadMenu(IDR_MENU1));

CMenu* pPopup = menu.GetSubMenu(0);

ASSERT(pPopup != NULL);

pPopup->TrackPopupMenu(TPM_RIGHTALIGN |

   TPM_RIGHTBUTTON, x, y, this);